They can be found in the Lithkren Vault after the quest in the eastern chamber. To get back to the laboratory, players can travel using the rowboat from the quest or, after completion, taking a digsite pendant and using it on the strange machine north of the rune dragon room, adding a teleport straight to Lithkren on it.

Two small bolts of electricity are launched onto the floor, which will then move to other tiles around the player, dealing small but rapid damage if the player doesn't move. Wearing insulated boots will minimise this damage from 6-7 to 1-2.

Upon release, rune dragons had a 1/3 chance of their dragon bones drop being replaced by superior dragon bones. This was removed from their drop table in an update on 25 January 2018 as part of a balancing change.